Buggy code:
public abstract class RDFRendererBase { @ Nonnull private static final String ANNOTATION_PROPERTIES_BANNER_TEXT = "Annotation<seq2seq4repair_space>properties" ; @ Nonnull private static final String DATATYPES_BANNER_TEXT = "Datatypes" ; @ Nonnull private static final String OBJECT_PROPERTIES_BANNER_TEXT = "Object<seq2seq4repair_space>Properties" ; @ Nonnull private static final String DATA_PROPERTIES_BANNER_TEXT = "Data<seq2seq4repair_space>properties" ; @ Nonnull private static final String CLASSES_BANNER_TEXT = "Classes" ; @ Nonnull private static final String INDIVIDUALS_BANNER_TEXT = "Individuals" ; @ Nonnull private static final String ANNOTATED_IRIS_BANNER_TEXT = "Annotations" ; @ Nonnull private static final String GENERAL_AXIOMS_BANNER_TEXT = "General<seq2seq4repair_space>axioms" ; @ Nonnull private static final String RULES_BANNER_TEXT = "Rules" ; @ Nonnull private static final OWLEntityIRIComparator OWL_ENTITY_IRI_COMPARATOR = new OWLEntityIRIComparator ( ) ; @ Nonnull protected final OWLOntology ontology ; protected RDFGraph graph ; @ Nonnull protected final Set < IRI > prettyPrintedTypes = RDFRendererBase . initPrettyTypes ( ) ; private final OWLDocumentFormat format ; private Set < IRI > punned ; protected final IndividualAppearance occurrences ; protected final AxiomAppearance axiomOccurrences ; @ Nonnull protected static Set < IRI > initPrettyTypes ( ) { } public RDFRendererBase ( @ Nonnull OWLOntology ontology ) { } protected RDFRendererBase ( @ Nonnull OWLOntology ontology , OWLDocumentFormat format ) { } protected abstract void beginDocument ( ) throws IOException { } protected abstract void endDocument ( ) throws IOException { } @ SuppressWarnings ( "unused" ) protected void beginObject ( ) throws IOException { } @ SuppressWarnings ( "unused" ) protected void endObject ( ) throws IOException { } protected abstract void writeAnnotationPropertyComment ( @ Nonnull OWLAnnotationProperty prop ) throws IOException { } protected abstract void writeDataPropertyComment ( @ Nonnull OWLDataProperty prop ) throws IOException { } protected abstract void writeObjectPropertyComment ( @ Nonnull OWLObjectProperty prop ) throws IOException { } protected abstract void writeClassComment ( @ Nonnull OWLClass cls ) throws IOException { } protected abstract void writeDatatypeComment ( @ Nonnull OWLDatatype datatype ) throws IOException { } protected abstract void writeIndividualComments ( @ Nonnull OWLNamedIndividual ind ) throws IOException { } public void render ( ) throws IOException { } private void renderOntologyComponents ( ) throws IOException { } private void renderInOntologySignatureEntities ( Collection < IRI > illegalPuns ) throws IOException { } private void renderEntities ( @ Nonnull Set < ? extends OWLEntity > entities , @ Nonnull String bannerText , Collection < IRI > illegalPuns ) throws IOException { } private void renderEntity ( @ Nonnull OWLEntity entity ) throws IOException { } private void writeEntityComment ( @ Nonnull OWLEntity entity ) throws IOException { } private void renderUntypedIRIAnnotationAssertions ( ) throws IOException { } private void renderAnonymousIndividuals ( ) throws IOException { } private void renderSWRLRules ( ) throws IOException { } private void renderGeneralAxioms ( ) throws IOException { } @ Nonnull private Set < OWLAxiom > getGeneralAxioms ( ) { } protected void renderOntologyHeader ( ) throws IOException { } @ Nonnull private RDFResource createOntologyHeaderNode ( RDFTranslator translator ) { } private void addVersionIRIToOntologyHeader ( @ Nonnull RDFResource ontologyHeaderNode , RDFTranslator translator ) { } private void addImportsDeclarationsToOntologyHeader ( @ Nonnull RDFResource ontologyHeaderNode , RDFTranslator translator ) { } private void addAnnotationsToOntologyHeader ( @ Nonnull RDFResource ontologyHeaderNode , RDFTranslator translator ) { } private boolean createGraph ( @ Nonnull OWLEntity entity , Collection < IRI > illegalPuns ) { } protected boolean shouldInsertDeclarations ( ) { } private AtomicInteger nextBlankNodeId = new AtomicInteger ( 1 ) ; private TObjectIntCustomHashMap < Object > blankNodeMap = new TObjectIntCustomHashMap < > ( new IdentityHashingStrategy < > ( ) ) ; @ Nonnull protected RDFResourceBlankNode getBlankNodeFor ( Object key , boolean isIndividual , boolean needId ) { } private class SequentialBlankNodeRDFTranslator extends RDFTranslator { public SequentialBlankNodeRDFTranslator ( ) { } @ Override protected RDFResourceBlankNode getAnonymousNode ( Object key ) { checkNotNull ( key , "key<seq2seq4repair_space>cannot<seq2seq4repair_space>be<seq2seq4repair_space>null" ) ; boolean isIndividual = key instanceof OWLAnonymousIndividual ; boolean needId = false ; if ( isIndividual ) { OWLAnonymousIndividual anonymousIndividual = ( ( OWLAnonymousIndividual ) ( key ) ) ; needId = multipleOccurrences . appearsMultipleTimes ( anonymousIndividual ) ; key = anonymousIndividual . getID ( ) . getID ( ) ; } else if ( key instanceof OWLAxiom ) { <START_BUG> isIndividual = true ; <END_BUG> needId = axiomOccurrences . appearsMultipleTimes ( ( ( OWLAxiom ) ( key ) ) ) ; } return getBlankNodeFor ( key , isIndividual , needId ) ; } } protected void createGraph ( @ Nonnull Set < ? extends OWLObject > objects ) { } protected abstract void writeBanner ( @ Nonnull String name ) throws IOException { } @ Nonnull private static List < OWLEntity > toSortedSet ( @ Nonnull Set < ? extends OWLEntity > entities ) { } public void renderAnonRoots ( ) throws IOException { } public abstract void render ( @ Nonnull RDFResource node ) throws IOException { } protected boolean isObjectList ( RDFResource node ) { } protected void toJavaList ( RDFNode n , @ Nonnull List < RDFNode > list ) { } }

Fix:
isIndividual = false ;